Exception is thrown on key not found errors with unified client.

try:
 bucket.get("key_that_does_not_exist") 
except:
 #couchbase.exception.MemcachedError

"id" values from view rows must be converted to strings to be used with Memcached API.

view = bucket.view("_design/beer/_view/by_name")
for row in view: 
 id = row["id"].__str__()
 beer = bucket.get(id)
 #do something

View queries on authenicated buckets are not currently supported.